diff --git a/ktg-mes/src/main/java/com/ktg/mes/wm/controller/WmsInTaskController.java b/ktg-mes/src/main/java/com/ktg/mes/wm/controller/WmsInTaskController.java
index 5683608..ba15175 100644
--- a/ktg-mes/src/main/java/com/ktg/mes/wm/controller/WmsInTaskController.java
+++ b/ktg-mes/src/main/java/com/ktg/mes/wm/controller/WmsInTaskController.java
@@ -278,7 +278,7 @@ public class WmsInTaskController extends BaseController {
                             }
                         } else {
                             // 订单解绑
-                            baseKnife.setPlanSheet(null);
+                            baseKnife.setPlanSheet("");
                             baseKnifeService.updateBaseKnife(baseKnife);
                         }
                     }